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I have not had much luck with spores maturing after picking…..
By: Steph Jarvis (Steph Jarvis)
2019-10-24 02:33:25 CST (+0800)

Typically, whatever stage of development the spores are in at the time of picking, is where they will stay – in general for puffballs. Now, Lycoperdon subcretaceum and others are an exception to this rule. So, try it and see. I have left them in the refrigerator and out on the porch to practice this. Lycoperdon perlatum – not so much. Trial and error….. rotten puffballs are SMELLY! FYI….. have fun with it!

Puff balls are getting more interesting …..
By: Huafang
2019-10-23 11:13:43 CST (+0800)

I asked those two questions because checking spores under the microscope can tell the difference among L. utriforme, C. cyathiformis, and C. craniiformis. I’m thinking I would bring future observations home and wait for spores to mature if this will work. Thank you for taking time to answer my questions. You make puff balls more interesting. I do use objects or a ruler for comparison once in a while; I haven’t used it to puff balls. I’ll remember to do this.

Answers to your questions:
By: Steph Jarvis (Steph Jarvis)
2019-10-19 00:41:20 CST (+0800)

Does gleba turn purple after it was cut open?
The gleba turning purple in Calvatia cyathiformis or Calvatia fragilis is not a staining reaction like you see in some Boletes or Lactarius species. The gleba turns purple as the spores mature – they are in fact a brownish purple color when mature.

Does Calvatia cyathiformis have spores when its gleba is in yellow stage?
As soon as puffballs – seemingly all species – as soon as they emerge from the soil and the primordium is developing into a larger fruiting body, even when white inside, the spores are growing and developing and maturing and as they mature further into their viable state for regeneration – they will develop an exo-ornamentation and a pigment. This pigmentation of the spores will turn the gleba the color of the spores. Much like the gills turning a brown or white or purple or red as the spores of that gilled fungi species mature. The color of the hymenium of a fungi is dictated by the color of the trillions of spores therein. Calvatia cyathiformis might turn a bit yellow when very immature, but will change to a purple brown very quickly and remain so….

I agree that this is Lycoperdon utriforme. When you hike, and find fungi that you put on MO, it is helpful to add a quarter or pocket knife into the image for the rest of us to see some kind of size comparison. The grass is one thing to compare too, but having another common object is very helpful. Thanks for the posting!

Two questions
By: Huafang
2019-10-18 09:34:09 CST (+0800)

Does gleba turn purple after it was cut open?
Does Calvatia cyathiformis have spores when its gleba is in yellow stage?

This has mosaic-like scales so the proposed name.

is this gleba turning purple? This gleba looks partly mature & yellow
By: Steph Jarvis (Steph Jarvis)
2019-10-18 01:22:51 CST (+0800)